Participatory Action Research (PAR)
In contrast to conventional research methodology PAR emphasizes practical action and the active and equitable participation of the community of research. PAR is study with and for rather than of a community. It recognizes the importance of people's lived experiences, approaches the gathering of knowledge as a collaborative process, and centers social and individual change.
You can find more detailed information on PAR in Alice McIntyre's book Participatory Action Research.